63381338 has 16 divisors (see below), whose sum is σ = 101666664. Its totient is φ = 29529600.

The previous prime is 63381323. The next prime is 63381347. The reversal of 63381338 is 83318336.

It can be written as a sum of positive squares in 4 ways, for example, as 61512649 + 1868689 = 7843^2 + 1367^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63381298 and 63381307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5795 + ... + 12662.

Almost surely, 2^63381338 is an apocalyptic number.

63381338 is a deficient number, since it is larger than the sum of its proper divisors (38285326).

63381338 is a wasteful number, since it uses less digits than its factorization.

63381338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18577.

The product of its digits is 31104, while the sum is 35.

The square root of 63381338 is about 7961.2397275801. The cubic root of 63381338 is about 398.7069453617.

The spelling of 63381338 in words is "sixty-three million, three hundred eighty-one thousand, three hundred thirty-eight".